Fan



FIG. 1 is a front perspective view of a fan showing my new design partially open;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a side elevational view thereof, the side opposite being a mirror image of the side shown in FIG. 6. 

The ornamental design for a fan, as shown and described. 